from bs4 import BeautifulSoup

html_doc = """
<html><head><title>The Dormouse's story</title></head>
<body>

<p class="title"><b>The Dormouse's story</b></p>
<p class="story">Once upon a time there were three little sisters; and their names were
<a href="http://example.com/elsie" class="sister" id="link1"><!--Elsie--></a>,
<a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
<a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>;
and they lived at the bottom of a well.</p>

<p class="story">...</p>
"""

data = BeautifulSoup(html_doc, "lxml")
# 1.Tag --->bs4.element.Tag
tag = data.a

# print(type(tag))
# 2.NavigableString -->bs4.element.NavigableString
string = data.p.string
print(string)
# print(type(string))

# 3.BeautifulSoup--->bs4.BeautifulSoup
# print(type(data))


# 4.Comment-->注释的内容--->bs4.element.Comment

string = data.a.string
print(type(string))


# contents 里面的所有内容 子标签
content = data.p.string

print(content)